Lubricator.



'PATENTED DEC. 1, 190s.-

3. s. BURRELL.

LUBRIGATOR.

APPLIGATION FILBD NOV, B, 1902 H0 MODEL.

Patented December 1, 1903.

PATENT OFFICE.

HARRY STEPHEN BURRELL, OF BELLEVILLE, CANADA.

LUBRICATOR.

eIECIFICATION forming part of Letters Patent No. 745,567, dated December 1, 1903.

Application filed Ncvemherfi, 1902. Serial lilo. 130,234, (No model.)

To all whom it may concern: I

Be it known that I, HARRY STEPHEN BUR- RELL, a subject of the King of Great Britain and Ireland,residing at Belleville,in the Province of Ontario, Dominion of Canada, have invented a new and useful Lubricator, of which the following is a specification.

The object of the present invention is to provide an improved form of lubricating de- Vice for rock-drills and similar devices; and to this end it comprises a lubricant-reservoir arranged in communication with the steam or other fluid pressure by which the drill is actuated, the shock or jar from the drilling operation permitting the escape of small quantities of oil to the feed-pipe and the oil being carried with the steam or air to the valvechest and cylinder of the rock-drill.

While the device is adapted more especially for application to mechanisms in which there is some shock or jar during operation, it may also be applied to any form of fluid-actuated motors with but slight modification in the mechanism for controlling the flow of oil.

In the accompanying drawings, Figure l is a longitudinal section of a lubricator constructed in accordance with my invention, the device being illustrated in the form of a coupling, which may be connected at a desired point in the fluid-pressure-supply pipe, preferably at a point adjacent to the valvechest. tion of the same on the line a a of Fig. 1.

In thepresent embodiment of the invention the casing of the lubricator is in the form of a pipe-coupling 1, which may be placed at any point in the pipe for conveying the steam or air or other actuating fluid to the rockdrill or engine, the coupling being preferably disposed at apoint adjacent to the valvechest in order that it may be subjected to the vibrations resulting from the impact of the drilling-tool. The intermediate portion of this coupling-section is cored out to form an annular chamber or reservoir 2, in which a suitable lubricant may be introduced by the removal of the plug 3, the latter being screwed into a threaded opening communicating with the reservoir.

In order that the contents of the reservoir may be subjected to the pressure of the actuating fluid, a small tube 4: extends from a Fig. 2 is a transverse sectional eleva-' At a point diametrically opposite the tube' 4 the inner wall of the reservoir is provided with an oil-escape passage 6, normally closed byaball-valve 7, adapted to a tapering valveseat 8. The valve is held to its seat bya compression-spring 9, one end of which is seated .in a recess in a plug 10, adapted to a threaded opening in the outer wall of the reservoir, the spring serving to hold the valve closely to its seat and prevent the escape of oil into the passage 5 when the rock-drill or other engine is not in operation.

As soon as the rock-drill or engine is set into motion the vibration or shock will be found sufficient to move the ball 7 slightly away from its seat or to rock the same on its seat to a position sufficient to permit a small quantity of oil to flow through the opening 6, the oil being caught'up by the actuating fluid and carried to the valve-chest and'cylinder of'the rock-drill or engine.

The position of the parts may be changed to suit varying conditions of use, and the shape of the valve may be altered, and while the construction herein described, and illusvarious changes in the form, proportions, size,

and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus described my invention, what I claim is a '1. A pressure-lubricator comprising an annular reservoir arranged around a fluid-pressure-supply pipe, there being a lubricant-discharge opening extending between the pipe and the lower portion of the reservoir, a spring pressed valve normally closing the opening, and a tube extending between the pipe and the upper portion of said reservoir.

2. A lubricating device comprising a pipecoupling section cored to form an annular oil-reservoir, there being an opening extending between the lower portion of the pipe bore and the lower portion of the reservoir, a spring-pressed valve normally closing said opening, and movable to open position by the shock and jar of the operating member to which the device is attached, and a tube extending between the pipe and the upper portion of said reservoir.

3. A lubricating device comprising a pipecoupling section cored to form an oil-reservoir and provided with oppositely-disposed threaded openings in its exterior walls, recessed plugs adapted to said threaded openings, a tube extending through the inner wall of the reservoir and opening into the interior of said reservoir, an oil-discharge opening the presence of two witnesses.

HARRY STEPHEN BURRELL. Witnesses:

G; KOTCHAPAW, J. S. TOWER.

my own I have hereto affixed my signature in 25 

